There are at least dozens, if not hundreds of differently designed drill jigs available on the new and used market, from under $5 to thousands of dollars. They all work if used properly, some better and more quickly and easier than others. Drills are used in many industries and in many home shops, so there is a huge market, but it is already pretty saturated with products that do the job if the operator does his job correctly. Drills can also be ground to a proper point without any jig at all, just eyes, brain, tool rest, and bench grinder. It is done all the time, some far better than others. I grind all my drills 3/4" and above by hands and eyes to a good result, checking them with a drill gauge. Drill bit grinding tooling has been studied, better mouse trapped and improved, and new products put on the market for well over a hundred years now. The market is mature, and may well be considered saturated. Please keep us informed with what you end up with. There is always room for a better product at the right price.
